James koxok



(No Model.)

J. 85 T. H. NOXON.

SPRING LOOKING DEVIGE'FOR DRILL HOES AND OULTIVATOB. TEETH.

No. 363,757. Patented May 24, 1887.

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' or cultivator-tooth E. The other end, b, fits UNITED STATES PATENT OFFICE.

JAMES NOXON AND THOMAS HENRY NOXON, OF INGERSOLL, ONTARIO,

I CANADA.

SPRING LOCKING DEVICE FOR DRILL-HOES AND CULTlVATOR-TEETH.

SPECIFICATION forming part of Letters Patent No. 353,757, dated May 24, 1887.

Application filed November 23, 1885. Renewed December 23, 1886. Serial No. 222.421. (No model.) Patented in Canada Novcmbcr 18, 1885, No. 22,843.

To aZZ whom it may concern.-

Be it known that we, JAMEs NOXON and THOMAS HENRY N OXON, both of the town of Ingersoll, in the county of Oxford, in the Province of Ontario, Canada, manufacturers of agbetween and near the end of the drag-bar, one

end of the double coiled spring being arranged to fit over the lug attached to the drill-hoe or cultivatortooth, while the other end of the spring butts against a lug formed on the locking-dog, substantially as hereinafter more par- .t-icularly explained.

Figure 1 is a view partially in section, sh owing our improved locking device. Fig. 2 is an enlarged detail of the locking-dog and one of the cylinders.

In the drawings, A represents the dragbar, made substantially in the usual manner, and having two cylinders, B, secured between the plates forming the drag-bar at ornear its end.

0 is a double coiled-wire spring wound round the two cylinders B, as indicated in the drawings, and having its ends aand b bent outfrom the coil, as indicated. The end a fits over a lug, D, formed on or connected to the drill-hoe against the lug d, which projects inwardly from the side of the locking-dog F. This dog F is connected to the top of the drill-hoe or cultivator-tooth E by the braces G. On reference to Fig. 1 it will be seen that this spring is wound around the two cylinders in the following manner: The end I) of the spring is fitted under the lug d of the locking-dog F at the inner end of one of the cylinders and thespringwire wound round that cylinder to the other end, when it is wound in the opposite direction around the other cylinder from its outer end to the inner end thereofiwhere its end a is bent out and fits over the lug D on the cultivatortooth or drill-hoe E.

Flanges 0, formed on the dog F, lap over the edges of the braces G, as indicated, so that the tension of the spring shall hold the flanges e of the locking-dog F securely against the edges ,of the braces G, and thereby maintain the double joint necessary for the working of the hoe or cultivator-tooth E. When the hoe or cultivator-tooth E comes in contact with an obstruction,thelugD will press upwardly against the end a of the spring 0, and simultaneously the lug d pushes against the end I) of the spring 0, causing the coil of the spring 0 to tighten round its cylinder from both ends until the hoe has assumed about the position indicated in dotted lines, by which time the obstruction will be passed,- and the tension of the spring 0 will bring the hoe or cultivator-tooth E instantaneously back to its initial position.

By providing a double coiled spring such as is described we not only secure simplicity in the arrangement of the parts necessary to apply it to the hoe, but we also have a powerful spring for bringing the hoe or tooth back into its initial position after passing the obstruction. 7

WVe are aware that a single rocking cylinder around which is coiled a wire spring has been proposed, and we are also aware that a single cylinder with a single coiled spring is not new for this purpose, and therefore lay no claim to such constructions. The novelty of our invention lies in the two cylinders-with the springwire wound round the same, as pointed out in the appended claims.

YVhat we claim as our invention is- 1. A double coiled-wire spring connected to the dragbar by means of two cylinders around which the spring is coiled, in combination with means, for connecting the spring to the hoe, so that its draft shall be directed simultaneously against both ends of the spring.

2. A double coiled-wire spring, G, wound round the cylinders B, attached to the drag-bar A,and having one ofits outwardly-turned ends,

a, fitting over the lug D, attached to the hoe or cultivator-tooth E, in combination with the dog F, provided with the lugs d, fitting against the outwardly-projecting end I) on the spring 0, and connected to the hoe or cultivator-tooth E by the braces G, substantially as and for the purpose specified.

3. A double coiled-wire spring, 0, wound round the cylinders 13, attached to the drag-bar A, and having one of its outwardly-turned ends, a, fitting over the lug D, attached to the hoe or cultivator-tooth E, in combination with the I dog F, provided with the lugs d, fitting against the outwardly-projecting end I) on the spring 0, and flanges e, for lapping over the edges of 15 the braces G, used to connect the dog to the hoeor cultivator-tooth E, substantially as and for the purpose specified.

Ingersoll, October 81, 1885.

' JAMES NOXON.

THOMAS HENRY NOXON.

In presence of J NO. W. SHAVER,

J NO. P. WVEBsTER. 

